I mean he quite literally said "on the F95 page — the same place where I repeatedly asked you not to repost my updates ahead of time, but you didThat is, of course, all speculation as no actual reason was supplied so all we can do is fill in the gaps ourselves (if we are interested enough to do so). I think the Patreon message was edited after I posted it here to remove the "increased risks of working with games in this genre" bit, which pretty much leaves just the "personal issues" part. With that considered though, it does call into question the validity of the statement - did the dev change his mind on the reasons, or on how much he wanted to tell people, or was he just putting in anything as an "excuse" and then realised that that one would only work if the genre was something like incest...? (Potentially he originally meant "genre" to cover AVNs as a whole, as that would at least make a bit of sense in the current climate.)
While it might seem like he is being vague if you focus on one sentence of his post, the rest makes it very clear. He already said his wife knows about his development of these games. He wasn't having sleepless nights because of some secret conspiracy, it was because development was causing stress.